Wire-rolling machine



(No Mudel.) 2 SheetsSheet 1.

L. GODDU.

WIRE ROLLING MACHINE. No. 451,001. Patented Apr. 21, 1891.

(No Model.) 2 SheetsSheet 2;

L. GODDU.

WIRE ROLLING MACHINE. No. 451,001. Patented Apr. 21,1891.

mllll J INITED STATES rric LOUIS GODDU, OF WVINOHESTER, ASSIGNOR TO THE MOKAY METALLIC FASTENING ASSOCIATION, OF BOSTON, MASSACHUSETTS.

WIRE-ROLLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 451,001, dated April 21, 1891. I

Application filed April 10, 1890. Serial No. 347,309- (No model.)

To all whom it may concern.-

Be it known that I, LoUIs GODDU, of W inchester, county ofMiddlesex, State of Massachusetts, have invented an Improvement inproperties as when first made.

In accordance with my invention the bar or rod is passed through twov ormore sets of substantially small rolls, each provided with a circumferential groove, which register with each other to form an opening through which the rod or bar is passed. The rolls referred to are supported throughout theirlength, preferably by a solid frame or bed at opposite sides of the groovein the said rolls, and also by larger rollers or disks, which support that part of the smaller rolls unsupported by the solid bed or frame. The last set of rolls may be termed the finishing set of rolls, and the other or preceding set or sets of rolls may be termed the preparatory reducing-rolls. The circumferential groove on each roll of the finishing-rolls is made semicircular in shape when it is desired to produce a wire of circu lar cross-section, so that the opening between the finishing set of rolls is a substantiallytrue circle of a diameter it is desired the finished wire should have, while the circumferential groove on each roll of the preparatory set of rolls is made of other than circular shape-as, fol-instance, it maybe elliptical in form. Preferably the rod or bar will be pressed through a number of preparatory sets of rolls before being acted upon by the finishing-rolls, and the opening between each preparatoryset of rolls is made smaller than the opening in the preceding set of preparatory rolls. The sets of rolls referred to are arranged with relation to each other, so that the transverse or narrower axis of the opening of a preceding set of rolls forms the longitudinal or longer axis of the opening of the next succeeding set of rolls. The rod, bar, or wire as it issues from the first set of rolls is of an elongated shape, and the transverse or narrower axis of the wire is of the same or substantially the same length as the longitudinal or longer axis of the opening of the next succeeding set of rolls, while the longitudinal or longer axis of the wire is longer than the transverse axis of the second or succeeding set of rolls, and as the wire is forced through the second set of rolls the metal at the ends of the longitudinal axis is forced or caused to flow back and the formation of a fin upon the Wire is obviated, the wire issuing from the second set of rolls having its longitudinal axis substanstantially at right angles to the longitudinal axis of the wire as it issues from the first or preceding set of rolls.

The amount of reduction may be controlled as desired by using a greater or less number of rolls having graduated openings, and the rolls are also preferably graduated in size from the first set to the finishing set of rolls.

The particular features of which my invention consists will be hereinafter described, and pointed out in the claims at the end of this specification.

Figure 1 represents a side elevation of a wire-rolling machine or mill embodying my invention; Fig. 2, a transverse section of the machine shown in Fig. l, on line a: 00, looking toward the right; Fig. 3, a front elevation of the frame of the machine shown in Fig. 1, looking toward the right; and Figs. 4 and 5, details of the reducing-rolls on an enlarged scale.

Referring to Fig. 2, a a represent two substantia-lly small cylindrical rolls, each provided with a circumferential groove a preferably made substantially near the longitudinal center of the said rolls. The rolls a, a

are fitted into suitable holes in a solid bed or tact with the circumference of the rollers a a. The disks a a form a bearing for the central or grooved portion of the rolls a a, and prefably the said disks form an integral part of substantially large cylindrical rollers a a, which are also supported throughout their length in suitable bearings in the bed a The rollers a a on one side of the bed a are provided, as herein shown, with journals a, upon which are mounted gear-wheels a a, which mesh with pinions a on the rolls a a, respectively, the said pinions meshing with each other. The rollers a a on the opposite side of the machine are provided, as herein shown, with substantially longer journals 7) 1), upon which are mounted worm-gears 19 b the said gears being secured upon the said journals by suitable caps 19 and nuts I) in usual manner. The worm-gears b b are driven by a worm b upon a shaft Z), located between the said gears, the said shaft having bearings in suitable boxes b secured-to the frame of the machine and having mounted upon it a gear b in mesh with a gearb on a shaftlflhavingbearings in suitable boxes 11 Z), secured to the frameof the machine,theshaftb constituting, as herein shown, the driving-shaft for the machine,it being provided with a driving-pulley b. Preferably the driving-shaft b will be provided with a worm 32 which meshes with worm-gears c c on the journals 0 c of a second'set of rollers 0 0 provided with disks 0 0 (see dotted lines, Fig. 2,) the said disks and rollers being solidly supported throughout their length by the frame or casting a but arranged substantially at right angles to the rollers a as clearly indicated in Fig. 1. The rollers c e have mounted upon them gears 0 0 in mesh with pinions 0 0 on arbors of the second set of rolls a 0, provided with a central circumferential groove (L The circumferential groove a of the rolls a a, as clearly shown in Fig. 4, is made longer than it is wide or deep, so that the opening formed between the said rolls is longer than it is wide, it being herein shown as substantially elliptical in form, while the groove a of the rolls 0 c is substantially semicircular in form, so that the opening between the rolls c c is .a substantially true circle. It will be noticed that the diameter of the opening between the rolls 0 c is substantially the same length as the narrow or transverse axis of the opening between the rolls a a, so that when the wire is passed through the rolls 0 0 the metal at the ends of the longitudinal axis of wire is forced or made to flow backward, thereby obviating the formation of a fin upon the wire.

In operation the rod or bar to be reduced is fed through a suitable hole or passage (1 (see Fig. 3) in the frame a and is drawn by the grooved rolls a a between the said rolls, and after passing .through the said rolls the wire, as herein represented, is acted upon by the second set of rolls 0 c", and the rolls 0 c act on the metal rod substantially at right angles to the rollers a a.

I have herein shown two sets of reducingrolls, as that number is sufficient to clearly illustrate my invention; but in practice a larger number of sets of rolls will preferably be used.

By providing the drawing or reducing rolls with solid bearings throughout their length on substantially their entire circumference all danger of springing of the drawing-rolls is obviated.

In practice the machine will preferably be made in sections, each section comprising a set of grooved drawing-rolls and supportingdisks, and any desired number of the said sections may be joined 01' secured together and the grooves in the said drawing-rolls made to decrease in size in regular order, so that the rod or bar may be reduced to any desired diameter, and preferably the size of the drawing-rolls will be reduced or graduated according to the thickness of the wire.

Preferably the sections of the frame-work will be secured together to form one complete machine; but it is evident that the sections may themselves form independent machines and constitute a preparatory and finishing machine.

I claim 1. In a machine for rolling wire, thecombination, with a supporting-frame, of drawingrolls provided with a circumferential groove and having bearings throughout their circumferences on opposite sides of said groove, rollers to support the grooved portion of the drawing-rolls, and means to rotate said rolls, substantially as described.

In a machine for rolling wire, the combination, with a supporting-frame, of a preparatory set of drawing-rolls provided with a circumferential groove of other than semicircular shape and having bearings throughout their circumference on opposite sides of the said groove, rollers to support the grooved portion of the drawing-rolls, a second or finishing set of drawing-rolls, each havinga semicircular groove and supporting-rollers substantially at right angles to the first set of rollers, and means to rotate said rollers, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS GODDU.

Witnesses:

J AS. H. CHURCHILL, FREDERICK L. EMERY. 

